Producing tubular heat exchangers, comprises arranging mutually placed collector tubes parallel to one another and welding ends of transverse tubes to prefabricated connecting holes of the collector tubes by introducing the welding heads

摘要

Producing tubular heat exchangers, comprises arranging mutually placed collector tubes parallel to one another and welding the ends of transverse tubes to prefabricated connecting holes of the collector tubes by introducing the welding heads of the welding machines from the open ends of the collector tubes in their interior space. The welding is carried out from inside the collector pipes by automatic welding. An independent claim is also included for a device for producing tubular heat exchangers comprising at least one welding head (10) carrying a welding device (20), where the welding head is arranged on an axially movable support tube (15), which is smaller in diameter than the inner diameter of the collector tube (4) and can be inserted into it, and a fixing device (16) for securing the support tube inside the collector tube which is provided with the welding head and is positioned exactly at the welding point, where the welding head is constructed rotatably around the weld to be performed.